Spoke with a customer service rep at NATIONAL COVERS when ordering a cover for my travel trailer. Provided the Rep with the manufacturers dimensions and asked if the cover I was ordering would fit. Rep told me the covers are not custom made for specific models, however, the cover should work for my trailer. I purchased the $475 cover. Received the cover and tried it on my trailer. The cover I ordered is supposed to fit an 11' trailer. Mine is 10'. There is at least 6' extra in length and the 4' in width. I'm not able to use the cover. Called NATIONAL COVERS and spoke with Nicole the Returns & Warranties Coordinator for NATIONAL COVERS. She told me that there is an 18% restocking fee and I, the purchaser, are responsible for paying the return shipping costs. I told Nicole that the sales rep from NATIONAL COVERS had said they believed the cover would fit my trailer. NATIONAL COVERS is a shady organization. I wouldn't recommend them.